Key Points
The answer will depend on how much time you already spend exercising, what you would do with those 15 minutes if you didnt use them to exercise, and a host of other benefits and costs that are surely unique to you..
By slowing down and analysing the benefits and costs of each smaller change, you will be better able to identify which goals would actually be beneficial and which might be good in theory but bad in practice for your life..
Also, goals whose benefits barely outweigh the costs might be particularly hard to [adhere to as you go along]..
Opportunity costs are also why economists look for ways to minimize time costs by combining activitiesgoing for a hike with friends, for example, or listening to an audio book while on the treadmill, or having walk-around online meetings..
As you set your resolutions this year, focus on personal costs and benefits, and make a resolution that could truly make you better off..
